How we compiled candidate positions
The Washington Post sent a detailed questionnaire to every Democratic campaign asking whether they support various climate change policies. We organized candidates with similar stances into groups using a combination of those answers, legislative records, action taken in an executive role and other public comments, such as policy discussion on campaign websites, social media posts, interviews, town halls and other news reports. See something that we missed? Let us know.
The page will update to reflect candidates’ positions as they become more clear. We expect candidates to develop more detailed policy positions throughout the campaign, and this page will update as we learn more about their plans. We will also note if candidates change their position on an issue.
At initial publication, this page included major candidates who had announced a run for president or an exploratory committee by June 1. Wayne Messam, mayor of Miramar, Fla., reported $0 in spending during the 3rd quarter of 2019. As a result, he is no longer considered a "major candidate" in the Post's 2020 coverage and has been removed from this project.